Constraining the Infalling Envelope Models of Embedded Protostars: BHR 71 and Its Hot Corino

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Constraining the Infalling Envelope Models of Embedded Protostars : BHR 71 and Its Hot Corino. / Yang, Yao-Lun; Evans, Neal J.; Smith, Aaron; Lee, Jeong-Eun; Tobin, John J.; Terebey, Susan; Calcutt, Hannah; Jorgensen, Jes K.; Green, Joel D.; Bourke, Tyler L.

In: Astrophysical Journal, Vol. 891, No. 1, 61, 01.03.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Yang, Y-L, Evans, NJ, Smith, A, Lee, J-E, Tobin, JJ, Terebey, S, Calcutt, H, Jorgensen, JK, Green, JD & Bourke, TL 2020, 'Constraining the Infalling Envelope Models of Embedded Protostars: BHR 71 and Its Hot Corino', Astrophysical Journal, vol. 891, no. 1, 61. https://doi.org/10.3847/1538-4357/ab7201

APA

Yang, Y-L., Evans, N. J., Smith, A., Lee, J-E., Tobin, J. J., Terebey, S., Calcutt, H., Jorgensen, J. K., Green, J. D., & Bourke, T. L. (2020). Constraining the Infalling Envelope Models of Embedded Protostars: BHR 71 and Its Hot Corino. Astrophysical Journal, 891(1), [61]. https://doi.org/10.3847/1538-4357/ab7201

Vancouver

Yang Y-L, Evans NJ, Smith A, Lee J-E, Tobin JJ, Terebey S et al. Constraining the Infalling Envelope Models of Embedded Protostars: BHR 71 and Its Hot Corino. Astrophysical Journal. 2020 Mar 1;891(1). 61. https://doi.org/10.3847/1538-4357/ab7201

Author

Yang, Yao-Lun ; Evans, Neal J. ; Smith, Aaron ; Lee, Jeong-Eun ; Tobin, John J. ; Terebey, Susan ; Calcutt, Hannah ; Jorgensen, Jes K. ; Green, Joel D. ; Bourke, Tyler L. / Constraining the Infalling Envelope Models of Embedded Protostars : BHR 71 and Its Hot Corino. In: Astrophysical Journal. 2020 ; Vol. 891, No. 1.

Bibtex

@article{840f66d2131e4e7bbbb286f5ea7b2fd5,
title = "Constraining the Infalling Envelope Models of Embedded Protostars: BHR 71 and Its Hot Corino",
abstract = "The collapse of a protostellar envelope results in the growth of a protostar and the development of a protoplanetary disk, playing a critical role during the early stages of star formation. Characterizing the gas infall in the envelope constrains the dynamical models of star formation. We present unambiguous signatures of infall, probed by optically thick molecular lines, toward an isolated embedded protostar, BHR 71 IRS1. The three-dimensional radiative transfer calculations indicate that a slowly rotating infalling envelope model following the {"}inside-out{"} collapse reproduces the observations of both lines, as well as the low-velocity emission of the HCN line. The envelope has a model-derived ag lines, where outflows or a Keplerian disk may contribute. The ALMA observations serendipitously discover the emission of complex organic molecules (COMs) concentrated within a radius of 100 au, indicating that BHR 71 IRS1 harbors a hot corino. Eight species of COMs are identified, including CH3OH and CH3OCHO, along with H2CS, SO2 and HCN v(2) = 1. The emission of methyl formate and C-13-methanol shows a clear velocity gradient within a radius of 50 au, hinting at an unresolved Keplerian rotating disk.",
keywords = "Star formation, Protostars, Bok globules, Astrochemistry, Radiative transfer, Gravitational collapse, SUBMILLIMETER-WAVE SPECTRUM, MOLECULAR CLOUD CORES, ASTROPHYSICAL INTEREST, PROTOSTELLAR COLLAPSE, ROTATIONAL SPECTRUM, MICROWAVE-SPECTRA, PHYSICAL CONDITIONS, TORSIONAL STATES, COLOGNE DATABASE, METHYL FORMATE",
author = "Yao-Lun Yang and Evans, {Neal J.} and Aaron Smith and Jeong-Eun Lee and Tobin, {John J.} and Susan Terebey and Hannah Calcutt and Jorgensen, {Jes K.} and Green, {Joel D.} and Bourke, {Tyler L.}",
year = "2020",
month = mar,
day = "1",
doi = "10.3847/1538-4357/ab7201",
language = "English",
volume = "891",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - Constraining the Infalling Envelope Models of Embedded Protostars

T2 - BHR 71 and Its Hot Corino

AU - Yang, Yao-Lun

AU - Evans, Neal J.

AU - Smith, Aaron

AU - Lee, Jeong-Eun

AU - Tobin, John J.

AU - Terebey, Susan

AU - Calcutt, Hannah

AU - Jorgensen, Jes K.

AU - Green, Joel D.

AU - Bourke, Tyler L.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - The collapse of a protostellar envelope results in the growth of a protostar and the development of a protoplanetary disk, playing a critical role during the early stages of star formation. Characterizing the gas infall in the envelope constrains the dynamical models of star formation. We present unambiguous signatures of infall, probed by optically thick molecular lines, toward an isolated embedded protostar, BHR 71 IRS1. The three-dimensional radiative transfer calculations indicate that a slowly rotating infalling envelope model following the "inside-out" collapse reproduces the observations of both lines, as well as the low-velocity emission of the HCN line. The envelope has a model-derived ag lines, where outflows or a Keplerian disk may contribute. The ALMA observations serendipitously discover the emission of complex organic molecules (COMs) concentrated within a radius of 100 au, indicating that BHR 71 IRS1 harbors a hot corino. Eight species of COMs are identified, including CH3OH and CH3OCHO, along with H2CS, SO2 and HCN v(2) = 1. The emission of methyl formate and C-13-methanol shows a clear velocity gradient within a radius of 50 au, hinting at an unresolved Keplerian rotating disk.

AB - The collapse of a protostellar envelope results in the growth of a protostar and the development of a protoplanetary disk, playing a critical role during the early stages of star formation. Characterizing the gas infall in the envelope constrains the dynamical models of star formation. We present unambiguous signatures of infall, probed by optically thick molecular lines, toward an isolated embedded protostar, BHR 71 IRS1. The three-dimensional radiative transfer calculations indicate that a slowly rotating infalling envelope model following the "inside-out" collapse reproduces the observations of both lines, as well as the low-velocity emission of the HCN line. The envelope has a model-derived ag lines, where outflows or a Keplerian disk may contribute. The ALMA observations serendipitously discover the emission of complex organic molecules (COMs) concentrated within a radius of 100 au, indicating that BHR 71 IRS1 harbors a hot corino. Eight species of COMs are identified, including CH3OH and CH3OCHO, along with H2CS, SO2 and HCN v(2) = 1. The emission of methyl formate and C-13-methanol shows a clear velocity gradient within a radius of 50 au, hinting at an unresolved Keplerian rotating disk.

KW - Star formation

KW - Protostars

KW - Bok globules

KW - Astrochemistry

KW - Radiative transfer

KW - Gravitational collapse

KW - SUBMILLIMETER-WAVE SPECTRUM

KW - MOLECULAR CLOUD CORES

KW - ASTROPHYSICAL INTEREST

KW - PROTOSTELLAR COLLAPSE

KW - ROTATIONAL SPECTRUM

KW - MICROWAVE-SPECTRA

KW - PHYSICAL CONDITIONS

KW - TORSIONAL STATES

KW - COLOGNE DATABASE

KW - METHYL FORMATE

U2 - 10.3847/1538-4357/ab7201

DO - 10.3847/1538-4357/ab7201

M3 - Journal article

VL - 891

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 61

ER -

ID: 247691707